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Test your basic knowledge |
Dairy Cattle And Reproduction
Start Test
Study First
Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. % of fat in milk. makes cheeses and ice cream. regulates cost of milk
seasonally polyestrous
age and castration
butterfat
age and castration
2. (LH) causes female's egg to break (her period)
leydid or interstitial cells
functions of progestrone
stag
Lutinizing Hormone in females
3. Actual heat cycle (period)
polyestrous
estrus
colostrum
van deferens
4. 4-6 days
cervix
estrous
4 major reasons for culling dairy cows
mare estrus
5. Allows extension of penis without fibro-elastic penis
femininity of a heifer
dairy cattle pregnancy check
retractor muscles
sigmoid flexure
6. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total
testis (gonads)
seminiferous tubules
age and castration
penis sizes vs delivering methods
7. 1-3 days
Dairy Cattle Lactation (standard)
cryptorchid
Holstein Cow
sow estrus
8. 14-19 (17) days
sertoli cells
ewe estrus cycle
1. more cost effective - 2. powdered milk is in excess production
penis sizes vs delivering methods
9. (male) pushes the testes upward toward the body for warmth or protection
dartos muscle
mare ovulation
cow gestation
functions of progestrone
10. 19-23 (21) days
rectal palpation (BSE)
sow estrus cycle
van deferens
functions of progestrone
11. 30-38 hours after estrus cycle begins
mare estrus cycle
cow ovulation
sow ovulation
Where livelihood is in agriculture
12. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg
sperm cell
prostaglandin
Lutinizing Hormone in females
libido test (BSE)
13. 283 days
6-8 weeks
organs used in spermatogenesis
cow gestation
1. more cost effective - 2. powdered milk is in excess production
14. Check feet and legs - look for masculine traits in build such as crest and muscling
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
testosterone
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
visual evaluation (BSE)
15. Front feet and head first. (except for hogs and dogs)
penis sizes vs delivering methods
sigmoid flexure
testis (gonads)
normal presentation of the fetus
16. FEED
penis sizes vs delivering methods
prostaglandin
reason for seasonal breeding periods
#1 cost in production
17. Sperm production
dry-off time in dairy cattle
humans: stress level vs sperm
spermatogenesis
organs used in spermatogenesis
18. Depository for semen during insemination. where urine leaves the body
mare estrus cycle
vagina
uterus
cervix
19. 30-38 hours after estrus cycle begins
mare estrus
dry-off time in dairy cattle
monorchid
sow ovulation
20. Duct through penis that carries sperm and urine
cow ovulation
rectal palpation (BSE)
cow estrus cycle
urethra
21. (LH) stimulates the Leydig cells to produce testosterone
Size of cow in relation to the amount of milk produced
Parturition
Lutinizing Hormone in males
seminiferous tubules
22. Birthing process (termination of gestation)
Parturition
Mares
cervix
cervix
23. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.
stag
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
oviducts
accessory sex glands
24. Male on one pin and female on other side
sperm cell
libido test (BSE)
cow ovulation
penis and prepuce observation (BSE)
25. When are dairy cattle dehorned?
cervix
scrotum
feeding a high producing dairy cow
~1 month
26. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
Avg. bull specs
Parturition
Mares
cow estrus
27. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract
eminal vesicles
seasonally polyestrous
semen evaluation (BSE)
Sperm survival specs
28. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.
effects of BST
Grading choice
uterus
ewe estrus
29. Allows extension of penis without fibro-elastic penis
sigmoid flexure
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
libido test (BSE)
mare gestation
30. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood
testosterone
Sperm growth rate
penis proper
ewe estrus
31. What helps regulate spermatogenesis?
what has to happen for males for copulation to occur
prostaglandin
humans: stress level vs sperm
testosterone
32. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated
burdizzo
feeding a high producing dairy cow
penis and prepuce observation (BSE)
pelvis
33. 114 days
urethra
sow gestation
cervix
Dairy Cattle milking schedule
34. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat
eminal vesicles
Holstein Cow
Bull's fibro-elastic penis
accessory sex glands
35. Luteolysis happens because of the ____________ hormone
organs used in spermatogenesis
scrotal circumference (BSE)
mare ovulation
prostaglandin
36. Can survive ~7 days in cow. vast majority <48 hours
#1 cost in production
Dairy Cattle Lactation (standard)
scrotum
Sperm survival specs
37. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
Follical Stimulating in males
pelvis
semen evaluation (BSE)
burdizzo
38. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
age and castration
visual evaluation (BSE)
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
libido test (BSE)
39. % of fat in milk. makes cheeses and ice cream. regulates cost of milk
pelvis
Reasons for gestation length being affected
penis and prepuce observation (BSE)
butterfat
40. 2 month growth cycle. stored in the epididymis of the bull
Sperm growth rate
Sperm survival specs
scrotal circumference (BSE)
why does the cow need fat deposits during pregnancy?
41. Can survive ~7 days in cow. vast majority <48 hours
cryptorchid
leydid or interstitial cells
Sperm survival specs
purpose of Breeding Soundness Exam (BSE) for males
42. The more stressed out the male is - the less sperm he is going to produce
penis sizes vs delivering methods
Brown Swiss Cow
Follical Stimulating in males
humans: stress level vs sperm
43. 265-285 days
reasons for castration
reason for seasonal breeding periods
Dairy Cattle Gestation
oviducts
44. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers
Reasons for gestation length being affected
Where livelihood is in agriculture
vulva
mastitis
45. Microscopic - make sure not sterile - very few bulls are actually tested
testis (gonads)
semen evaluation (BSE)
Bull's fibro-elastic penis
penis sizes vs delivering methods
46. (switzerland) 2nd in size and milk production - most muscle -
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
Brown Swiss Cow
elastrator
Hard
47. Sperm is produced here
behavioral signs of estrus
seminiferous tubules
monestrous
mare estrus cycle
48. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
what has to happen for males for copulation to occur
Reasons for gestation length being affected
Mares
sigmoid flexure
49. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market
reason for seasonal breeding periods
Follical Stimulating in females
Blood
reasons for castration
50. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation
functions of progestrone
things to check for in a breeding soundness exam (BSE)
leydid or interstitial cells
vulva